土工基础

›› 2017, Vol. 31 ›› Issue (3): 335-340.

• 工程实录 • 上一篇    下一篇

基于信息量法的贵州印江县地质灾害危险性评价

蔡  清   

  1. （武汉市政工程设计研究院有限责任公司，武汉 430023）
  • 收稿日期:2017-01-10 修回日期:2017-02-16 出版日期:2017-06-25 发布日期:2017-06-26
  • 作者简介:蔡 清（1986-），男，硕士，工程师，研究方向为岩土工程。

Information Method for the Geohazard Risk Assessment of Yinjiang County of Guizhou Province

CAI Qing   

  1. (Wuhan Municipal Engineering Design & Research Institute Co. Ltd., Wuhan 430023)
  • Received:2017-01-10 Revised:2017-02-16 Online:2017-06-25 Published:2017-06-26

摘要： 我国西部中高山地区地质灾害频发，选取贵州省印江县为研究区，从地质灾害发育的地质致灾因子和环境致灾因子出发，选取坡度、坡向、高程、岩组类型、构造断裂密度五个地质致灾因子和年均降雨量、道路工程二个环境致灾因子建立地质灾害危险性评价指标体系，以ArcGis软件为分析工具，运用信息量法对印江县地质灾害危险性进行评价。研究结果表明：印江县地质灾害危险性高和极高的区域分别占总面积的27.33%和5.40%，主要分布在印江县西北部和西南局部地区，其中极高区主要分布在峨岭镇、板溪镇南部、杉树乡和中坝村局部地区。

关键词: 信息量法, 地质灾害, 危险性评价, 地质致灾因子, 环境致灾因子

Abstract: Geohazards are frequently occurred in the mountain areas of western part of the country. This paper presents the pilot study results on the Yinjiang County of Guizhou Province.  Both the geological hazard inducing factors, such as, ground elevation, grade and direction of the target slope, lithology and the tectonic structures and the environmental hazard inducing factors, such as, annual precipitation and highway engineering, are used in the evaluation by the Arc GIS with information method. The results indicate that areas with high geohazard risk and extremely high geohazard risk in Yinjiang County account for 27.33% and 5.40% of total area, respectively. These areas are mainly distributed in northwestern and southwestern of Yinjiang County. Areas with extremely high geohazard risks are mainly distributed in Eling Town, the south of Banxi Town, Shanshu Village and Zhongba Village.

Key words: Information Method, Geohazards, Risk Assessment, Geological Hazard Factors, Environmental Hazard Factor